Basler Electric DGC-2020HD - Manual (Page 82)

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is selected on the Relay Control screen (Figure 28). See the BESTlogicPlus chapter for more information
about DGC-2020HD programmable logic.
Figure 28. Settings Explorer, System Parameters, Relay Control Screen
The predefined functionality is available as an input to the logic. If Programmable is selected as the relay
control mode, connecting the corresponding predefined input function to the relay causes it to function as
if Predefined were selected as its relay control type. However, other logic can be combined with it to
create operation that is more versatile. If Programmable is selected for a relay, but it is not used in the
logic, that relay will never close.
An example logic scheme connecting the predefined inputs directly to the “programmable” relay outputs
for all three relays is shown in Figure 29.
Figure 29. Example Logic Scheme of Programmable Relays
Programmable Contact Outputs
DGC-2020HD controllers have 12 programmable output contacts (OUT 1 through 12). An additional 24
contact outputs are provided with an optional CEM-2020 (Contact Expansion Module). An optional CEM-
2020H (Contact Expansion Module - High Current) provides 18 contact outputs. Up to four CEM-2020s or
CEM-2020Hs, in any combination, are supported by the DGC-2020HD.
Programmable Output Configuration
BESTCOMSPlus ® Navigation Path: Settings Explorer, Programmable Outputs, Contact Outputs
Front Panel Navigation Path: Settings Explorer > Programmable Outputs > Contact Outputs
Figure 30 illustrates the Contact Outputs screen found in BESTCOMSPlus.
Each output can be programmed with a text label describing its use. Up to 16 alphanumeric characters
are accepted. This label appears in BESTlogicPlus Programmable Logic where the output is used to aid
in ease of programming and clarity.
Contact Outputs DGC-2020HD